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/*
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * SmartGWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  SmartGWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */

import com.smartgwt.client.widgets.AnimationCallback;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Img;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.VLayout;

public class AnimateComplexSequenceSample implements EntryPoint {
    
    
    protected ZoomImg zoomedObject = null;

    public void onModuleLoad() {
        VLayout layout = new VLayout();
        layout.setMembersMargin(10);
        layout.addChild(new ZoomImg(this, 0, "cube_blue.png"));
        layout.addChild(new ZoomImg(this, 100, "pawn_yellow.png"));
        layout.addChild(new ZoomImg(this, 200, "piece_green.png"));
        layout.draw();
    }

    public static class ZoomImg extends Img {
        private AnimateComplexSequenceSample sample;
        private int zoomTime;
        private int shrinkTime;
        private Integer originalLeft = null;

        public ZoomImg(final AnimateComplexSequenceSample sample, int left, String src) {
            final ZoomImg _this = this;
            this.sample = sample;
            setLeft(left);
            setSrc(src);
            setWidth(48);
            setHeight(48);
            setAppImgDir("pieces/48/");
            zoomTime = 1000;
            shrinkTime = 300;
            addClickHandler(new ClickHandler() {
                public void onClick(ClickEvent event) {
                    // remember original position
                    if (originalLeft == null)
                        originalLeft = getLeft();
                    if (sample.zoomedObject == null) { // nothing expanded, so just expand
                        zoom();
                    } else if (_this.equals(sample.zoomedObject)) { // already expanded, so just shrink
                        shrink();
                        sample.zoomedObject = null;
                    } else { // another object is expanded; shrink it and then expand this object
                        sample.zoomedObject.shrink(new AnimationCallback() {
                            public void execute(boolean earlyFinish) {
                                zoom();
                            }
                        });
                    }
                }
            });
        }

        public void zoom() {
            animateRect(25, 100, 200, 200, null, zoomTime);
            sample.zoomedObject = this;
        }

        public void shrink() {
            shrink(null);
        }

        public void shrink(AnimationCallback postShrinkScript) {
            animateRect(originalLeft, 0, 48, 48, postShrinkScript, shrinkTime);
        }
    }

}
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